Ayo i need help plz it would be rlly helpful

Step-by-step explanation:

Combine like terms

6) -4f - 9 -f + 15 = -4f - f  -9  +15

                          = -5f  + 6

7) 1.5g - 10 + 6.5g - 3 = 1.5g + 6.5g   - 10 - 3

                                  = 8.0g -13

                                   = 8g - 13

8)

9) 4.2j + 6.7j - 5j - 5 = 10.9j - 5j - 5

                                = 5.9j - 5

i think it's either c or d

step-by-step explanation: the entire question is extremely odd. 04 obviously refers to the interest rate. honestly i will say the answer is c. because the (2 x 12) part would mean it's compounded semiannually. i'll say choose c.